Volume 29 Issue 7
Jul.  2014
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ZHAO Hong, LI Jian-bo, CUI Zhao. Flight dynamics characteristics of miniature unmanned ducted vehicle[J]. Journal of Aerospace Power, 2014, (7): 1721-1728. doi: 10.13224/j.cnki.jasp.2014.07.027
Citation: ZHAO Hong, LI Jian-bo, CUI Zhao. Flight dynamics characteristics of miniature unmanned ducted vehicle[J]. Journal of Aerospace Power, 2014, (7): 1721-1728. doi: 10.13224/j.cnki.jasp.2014.07.027
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Flight dynamics characteristics of miniature unmanned ducted vehicle

doi: 10.13224/j.cnki.jasp.2014.07.027

  • State Key Laboratory of Helicopter Rotorcraft Aeromechanics, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

  • Received Date: 2013-03-25
  • Publish Date: 2014-07-28
    Abstract
  • To investigate the flight characteristics of unmanned ducted vehicle, a full-scale ducted propeller wind tunnel test was conducted to build the aerodynamic model and analyze the aerodynamic characteristics of ducted propeller. On these foundations, the flight dynamic mathematical model of the vehicle was established to investigate the characteristics trimming and stability of unmanned ducted vehicle.The results indicate that the aerodynamic characteristics of the ducted-propeller are strongly influenced by the forward speed and attitude angle, leading to significant variations in stability and maneuverability of the unmanned ducted vehicle at different forward speeds. This unmanned ducted vehicle is an unstable body similar to inverted pendulum in hover and low forward speed. The aerodynamic damping is small, while the speed and attitude angle diverge quickly, with double amplitude in 0.5 s. The flight stability is improved due to the increase of aerodynamic damping at high forward speed. The reverse control brings difficulties to flight control the unmanned ducted vehicle.

     

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